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Allegheny Portage Railroad National Historic Site. Geologic Resources Evaluation Report
| 题名： | Allegheny Portage Railroad National Historic Site. Geologic Resources Evaluation Report |
| 作者： | empty |
| 关键词： | Historic site##Geologic resource##Pennsylvania##Coal deposits##Construction##Cultural resources##History##Mountains##National park##Natural resource management##Physiography##Plateaus##Railroad##Rock formations##Allegheny Portage Railroad National Historic Site## |
| 摘要： | Allegheny Portage Railroad National Historic Site commemorates the pioneering lifestyle and highlights the 19th-century engineering effort that resulted in the construction of a railroad through the Allegheny Mountains. This railroad included 10 inclined planes and the nation's first railroad tunnel. The Allegheny Portage Railroad allowed the transport of boats from the Pennsylvania canal over the Allegheny Mountains. The park protects the landscape in part of the Allegheny Front in central Pennsylvania. The park is located along the boundary between the Valley and Ridge and the Appalachian Plateaus physiographic province. This area displays a sharp contrast between the folded and faulted rocks on the eastern edge of the mountains versus the eroded, horizontal beds (plateaus) of the western side. The geologic substrate, as well as surficial processes (geologic, hydrologic, and biologic), determine the features of every landscape. Geologic processes gave rise to rock formations, mountains and valleys, escarpments and ridges, dissected plateaus, and coal deposits at Allegheny Portage Railroad National Historic Site. The landscape played a prominent role in the history of central Pennsylvania with respect to early settlement, mining activity, and the development of trade and transportation routes. Knowledge of the park's natural and cultural resources, including the geology, directly influences resource management decisions in the park. |
| 总页数： | 42 |
| 报告类型： | 科技报告 |
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